The Velleman Interval Timer Kit produces a miniature timer suitable for all applications requiring a delay of up to 60 seconds. It is also available as a pre-mounted module.
Project kit will produce an intermittent operation for circuits and equipment
Q. Can it be configured to make a connection on power up ie on power up it would switch on for 5 seconds then switch off? I'm thinking of connecting a lens cleaning device (wiper) on a security camera that is activated by switching the power off then on again.
A. Hi Glyn, thank you for your question. This unit is designed to be permanently powered but if the unit to be operated is powered through the switch then looking at the data sheet this could be set for the period of time required.
Q. I am trying to build an open door alarm that will sound only if the door is left open for more than 60 seconds.
My current design is for instant alarm when the door is opened. It comprises a 240 to 12 V transformer, a relay unit, sounder and reed switch.
Can you advise as to whether this Velleman MK111 is suitable to give me that 1 minute delay.
A. Hi Fraser, thank you for your question. This will work, you will need to experiment with the potentiometer settings to get the required delay.
